Belt and method of splicing the same

• US 4,564,542 A
• Filed: 03/20/1985
• Issued: 01/14/1986
• Est. Priority Date: 03/20/1985
• Status: Expired due to Fees

• Current Assignee: Goodrich Corporation (Rtx Corporation)
• Original Assignee: Goodrich Corporation (Rtx Corporation)
• Inventors: Worcester, Winthrop S.
• Primary Examiner(s): Thomas, Alexander S.
• Application Number:
  US06/714,143
• Time in Patent Office: 300 Days
• Field of Search: 428/58, 156/257, 156/258, 156/304.3, 156/304.5, 156/305
• US Class Current: 428/58
• CPC Class Codes: B29C 65/5035 being in thread form, i.e. in the form of a single filament, e.g. in the form of a single coated filament
• CPC Class Codes: B29C 65/505 and placed in a recess formed in the parts to be joined, e.g. in order to obtain a continuous surface
• CPC Class Codes: B29C 65/564 hidden in the joint, e.g. dowels or Z-pins B29C65/603 takes precedence
• CPC Class Codes: B29C 66/02241 Cutting, e.g. by using waterjets, or sawing using heat B29C66/0246; cutting-off or cutting-out a part of a strip-like or sheet-like material, transferring that part and fixing it to an article B29C69/005
• CPC Class Codes: B29C 66/1142 Single butt to butt joints
• CPC Class Codes: B29C 66/4322 by joining a single sheet to itself B29C66/4332 takes precedence
• CPC Class Codes: B29C 66/4324 for making closed loops, e.g. belts
• CPC Class Codes: B29C 66/4329 the joint lines being transversal but non-orthogonal with respect to the axis of said tubular articles, i.e. being oblique
• CPC Class Codes: B29C 66/5241 for forming coaxial connections, i.e. the profiled elements to be joined forming a zero angle relative to each other
• CPC Class Codes: B29C 66/71 characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29C 66/7212 characterised by the composition of the fibres
• CPC Class Codes: B29C 66/72141 Fibres of continuous length
• CPC Class Codes: B29K 2075/00 Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2277/10 Aromatic polyamides [Polyaramides] or derivatives thereof
• CPC Class Codes: B29L 2031/7092 Conveyor belts
• CPC Class Codes: F16G 3/10 Joining belts by sewing, sticking, vulcanising, or the like; Constructional adaptations of the belt ends for this purpose
• CPC Class Codes: Y10T 156/1064 Partial cutting [e.g., grooving or incising]
• CPC Class Codes: Y10T 156/1066 Cutting to shape joining edge surfaces only
• CPC Class Codes: Y10T 428/192 Sheets or webs coplanar

Abstract

The method of splicing belt ends to form an endless belt wherein such belt has reinforcing cords extending longitudinally therethrough. The respective belt ends are sheared to provide complimentary mating faces which are cemented together. Slots are cut along the running length of both end belt sections across the splice line and spaced laterally from the reinforcing cords. Additional cords are placed into such slots and cemented to both sections to provide an integral endless belt.

Claims

1. In a longitudinal extending endless reinforced belt having a first end belt section and a second end belt section, said end sections being cemented together across their abutting faces to define a splice line, said belt having a body proper with parallel reinforcing cords extending therethrough, said cords extending in the longitudinal direction of the belt for the entire length of such belt and terminating at said splice line, said endless reinforced belt having strands embedded therein and extending across said splice line into both of said end belt sections, said strands spaced laterally from said cords in said end belt sections, and said strands being cemented to the body proper of said end belt sections.

2. In a longitudinally extending endless reinforced belt as set forth in claim 1 wherein said splice line extends across said belt at a diagonal relative to the side edges thereof.

3. In a longitudinally extending endless reinforced belt as set forth in claim 2 wherein said belt is a polyurethane belt;

and said strands are cemented by a polyurethane cement to said body proper of said polyurethane belt to form a uniform homogeneous belt throughout.

4. In a longitudinally extending endless reinforced belt as set forth in claim 3 wherein said strands are greater in number than said cords.

5. The method of splicing the respective end belt sections of a polyurethane belt having parallel reinforcing cords therein to form an endless belt comprising the steps of shearing the respective belt ends to form a linear face on each section, cutting narrow slots that are laterally spaced from said reinforcing cords in each of said end sections and with said slot in said sections being in alignment;

cementing said faces of said end sections, and cementing cords into said aligned slots to form an integral endless conveyor belt.

6. The method of splicing the respective end belt sections as set forth in claim 5 wherein said cementing is done by a polyurethane cement to provide a chemical bonding and to further provide a homogeneous integral belt.

7. The method of splicing as set forth in claim 6 wherein said shearing of said belt ends is at a bias angle.

8. The method of splicing as set forth in claim 7 wherein slots are cut to a width that provides a slight clearance space to either side of cords received by said slots.

9. The method of splicing as set forth in claim 8 wherein said slots cut into said belt sections are greater in number than the number of reinforcing cords in said initial belt sections.